In-Depth Analysis of QIE Group Multi-Seed Hydraulic Oil Press: Efficient Pressing of Multiple Seeds

In the oil processing market, the demand for "multi-seed universal equipment" is constantly increasing. Whether it's peanuts, walnuts, sesame seeds, or rapeseed, users want a single machine that can handle the different requirements for hardness, oil content, and aroma of various oilseeds. QIE Group's multi-seed hydraulic oil press addresses this industry pain point by implementing systematic engineering optimizations in structural design, pressure control, temperature management, and oil quality protection, helping oil mills achieve higher oil yields and more stable oil quality.

This article will break down the core technologies of the equipment, its real-world data performance, and the pressing strategies for different oilseeds from a professional perspective. It will also share practical application cases and maintenance tips to help users choose equipment more scientifically.

I. Three core issues that oil mills care about most

Based on extensive feedback from oil mills and on-site records from engineers, users' most pressing concerns tend to fall into three categories:

1. Can the equipment be adapted to various types of oilseeds?

Different oilseeds vary greatly in hardness: walnut shells are hard, peanuts are soft, sesame seeds are small, and rapeseed is difficult to press.
Poor versatility is the biggest pain point of traditional equipment.

2. How to ensure that nutrients are not destroyed?

Vitamin E and unsaturated fatty acids, in particular, are extremely sensitive to temperature.

3. How to steadily increase oil yield?

Insufficient pressure, excessively high temperature, or inadequate pretreatment can all lead to a 2% to 5% decrease in oil yield.

Our multi-oilseed hydraulic oil press addresses these three points one by one.

II. Core Technology of Hydraulic Oil Press: Why is "Multi-purpose Machine" Feasible?

(1) High-pressure hydraulic system (35–60MPa adjustable)

• The hydraulic cylinder is made of high-strength alloy steel with a pressure resistance of >300MPa.

• Pressure stability ±3% to avoid uneven pressing.

• Pressure can be automatically adjusted according to oilseeds.

  • Peanuts: Medium pressure

  • Walnuts: High pressure

  • Sesame seeds: Low pressure, slow pressure

  • Rapeseed: Medium pressure + preheating pressure boosting

Engineer's experience: Higher pressure is not always better.

For example, with sesame seeds, if the pressure is too high, it can actually "lock in" the oil, reducing the oil yield by 1-2%.

(2) Adjustable pressing chamber structure (high hardness HRC 55–60)

The pressing chamber is made of wear-resistant alloy steel, and its structure is reinforced to address the differences in hardness among different oilseeds.

• Hard oilseeds (walnuts) : Utilizes a wear-resistant reinforced press sleeve.

• High-oil-content oilseeds (sesame, peanuts) : Designed with increased oil overflow outlets.

• Fine oilseeds (sesame) : Add a precision filter plate to prevent leakage.

The machine truly achieves "adaptability to various oilseeds without replacing major components".

(3) Key advantages: Low temperature cold pressing technology (temperature control of 35–60°C)

Why is cold pressing so important for oil quality?
Because according to industry data:

• When the temperature exceeds 80°C
  → Vitamin E loss can reach 40%.

• When the temperature exceeds 100°C
  → Unsaturated fatty acids may be oxidized

• Keep below 60°C
  → It can retain 85% to 90% of the nutrients.

We make cold pressing possible through a temperature control system, slow hydraulic rhythm, and a cooling structure for the pressing chamber. 🔗 [ Cold Press Oil Machine: Working Principle and Main Advantages ]

III. Measured Oil Yield of Different Oilseeds and Operational Optimization

To avoid errors caused by single equipment or individual cases, the table below is compiled based on the reference data range of common hydraulic cold pressing processes in the industry (not as fixed values, but only for equipment selection and process judgment).

👉 This value represents a common range in the industry. The actual oil yield will be affected by factors such as pretreatment intensity, material moisture content, impurity content, and primary/secondary pressing methods. Low-temperature cold pressing is usually about 5-10 percentage points lower than hot pressing, which is within the normal range.

IV. Applicable to multiple scenarios, flexible capacity planning

Whether you're making healthy cooking oil at home, running a small oil mill, or even managing a medium-sized oil plant with a daily capacity of several tons, QIE's hydraulic oil presses can flexibly meet your needs. The home kitchen version features a compact design and is easy to operate; the small oil mill version emphasizes automated control to reduce manpower; and the medium-sized oil plant version focuses on stable efficiency and 24-hour continuous production capacity.

Frequently Asked Questions

Operation and maintenance tips

Our hydraulic oil presses are equipped with an automated control panel, simplifying the operation process. Routine maintenance includes checking the hydraulic oil level, cleaning residue, and regularly replacing seals to ensure the equipment's longevity and stable operation.